Application: Show your Solution
1. Lambanog is a 90 degree proof, what is the proportion by volume of alcohol to
water in lambanog? (Hint: the proof of an alcohol is twice the content in percent
ex. 10% = 20 proof)
2. An antifreeze solution was prepared by dissolving 250 mL of methyl alcohol in
sufficient water to produce 700 mL solution. What is the concentration of this
solution expressed as percent by volume methyl alcohol?
3. What is the molarity of a solution containing 115g of ethanol (C2H5OH)?
4. How many mL of isopropyl alcohol are there in 420 ml bottle of 70% rubbing
alcohol?
In a similar bottle of 40% rubbing alcohol? Which solution contains more solute?


Wag po sumagot kung hindi alam ang sagot